/* Global common subexpression elimination/Partial redundancy elimination
|
/* Global common subexpression elimination/Partial redundancy elimination
|
and global constant/copy propagation for GNU compiler.
|
and global constant/copy propagation for GNU compiler.
|
Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
|
Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
|
2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
|
2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
|
|
|
This file is part of GCC.
|
This file is part of GCC.
|
|
|
GCC is free software; you can redistribute it and/or modify it under
|
GCC is free software; you can redistribute it and/or modify it under
|
the terms of the GNU General Public License as published by the Free
|
the terms of the GNU General Public License as published by the Free
|
Software Foundation; either version 3, or (at your option) any later
|
Software Foundation; either version 3, or (at your option) any later
|
version.
|
version.
|
|
|
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
|
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
|
WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
for more details.
|
for more details.
|
|
|
You should have received a copy of the GNU General Public License
|
You should have received a copy of the GNU General Public License
|
along with GCC; see the file COPYING3. If not see
|
along with GCC; see the file COPYING3. If not see
|
<http://www.gnu.org/licenses/>. */
|
<http://www.gnu.org/licenses/>. */
|
|
|
#ifndef GCC_GCSE_H
|
#ifndef GCC_GCSE_H
|
#define GCC_GCSE_H
|
#define GCC_GCSE_H
|
|
|
/* Target-dependent globals. */
|
/* Target-dependent globals. */
|
struct target_gcse {
|
struct target_gcse {
|
/* Nonzero for each mode that supports (set (reg) (reg)).
|
/* Nonzero for each mode that supports (set (reg) (reg)).
|
This is trivially true for integer and floating point values.
|
This is trivially true for integer and floating point values.
|
It may or may not be true for condition codes. */
|
It may or may not be true for condition codes. */
|
char x_can_copy[(int) NUM_MACHINE_MODES];
|
char x_can_copy[(int) NUM_MACHINE_MODES];
|
|
|
/* True if the previous field has been initialized. */
|
/* True if the previous field has been initialized. */
|
bool x_can_copy_init_p;
|
bool x_can_copy_init_p;
|
};
|
};
|
|
|
extern GTY(()) struct target_gcse default_target_gcse;
|
extern GTY(()) struct target_gcse default_target_gcse;
|
#if SWITCHABLE_TARGET
|
#if SWITCHABLE_TARGET
|
extern struct target_gcse *this_target_gcse;
|
extern struct target_gcse *this_target_gcse;
|
#else
|
#else
|
#define this_target_gcse (&default_target_gcse)
|
#define this_target_gcse (&default_target_gcse)
|
#endif
|
#endif
|
|
|
#endif
|
#endif
|
|
|
